z^8*z^9/z^13

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Solution for z^8*z^9/z^13 equation: 


D( z )

z^13 = 0

z^13 = 0

z^13 = 0

1*z^13 = 0 // : 1

z^13 = 0

z = 0

z in (-oo:0) U (0:+oo)

(z^8*z^9)/(z^13) = 0

1*z^4 = 0 // : 1

z^4 = 0

z = 0

z in { 0} 

z belongs to the empty set

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